diff options
| author | Chen Liangjun <b36089@freescale.com> | 2012-05-04 17:49:51 +0800 |
|---|---|---|
| committer | Jason Liu <r64343@freescale.com> | 2012-07-20 13:37:05 +0800 |
| commit | c1a4a5d3ef7bd61d9512ba796813206e0ad9d386 (patch) | |
| tree | 7c16bc10d6caa820859ac88f98d19aa1db70ada5 /sound | |
| parent | e6f757055755da8f75c7315d3521b86bfe2f6444 (diff) | |
ENGR00181697 HDMI: fix ahb bus error bug
In ARIK, to prevent noise cause by false triggered burst, we reduce
the incr type to 4. and the change may cause bus_error because a
burst may unexpectly stop and thus an AHB bus error happens.
Reset HDMI Audio FIFO state to prevent AHB bus error.
Signed-off-by: Chen Liangjun <b36089@freescale.com>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/imx/imx-hdmi-dma.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/soc/imx/imx-hdmi-dma.c b/sound/soc/imx/imx-hdmi-dma.c index ac7ac5d6e3fb..d391267c108b 100644 --- a/sound/soc/imx/imx-hdmi-dma.c +++ b/sound/soc/imx/imx-hdmi-dma.c @@ -24,6 +24,7 @@ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/slab.h> +#include <linux/delay.h> #include <sound/core.h> #include <sound/initval.h> @@ -883,6 +884,9 @@ static int hdmi_dma_trigger(struct snd_pcm_substream *substream, int cmd) } dumpregs(); + hdmi_fifo_reset(); + udelay(1); + hdmi_dma_priv->tx_active = true; hdmi_dma_start(); hdmi_dma_irq_mask(0); |